Rope puller



novizo, 192s.

- 1,692,728 J. O. GRENIER ROPE FULLER Filed Sept. 15. 1927 INVENTOR JOSEPH OSCAR GREN/ER A TTORNEYS Patented Nov. 20, 19 28.

JOSEPH OSCAR GRENIER, F VANCOUVER, BRITISH ICOIJUMBIA,'.'CANADLA.

ZROPE FULLER.

Application f11ed -September 15, 1927. iSeria1FNO. :2 9;'Z69.

My invention relates to .improvementssin T0136 pulling devices which .arexparticularly adapted for use by "linemenand others in stretching cables, tightening .guy wires on o towers and thelike. .*The objects ofthe invention are to provide meansappl-icable particularly to the rope pulleripatent granted 1 to me in the UnitedfStates,.February16th,

1926, under Number 1,57 3,397, whereby'the l0 rotation of the screw rackis e'ftected'by'a simple lever having a ratchet mechanism capable of being quickly adjusted for'operation in either direction. A further ob ect is to provide a split nut mechanism adapte'dcto engage the screw rack and'be quickly released therefrom to facilitate the resetting of the puller for taking :anotherpnllon the rope,

which nut is so designed as to be immune from jamming dueto thepresencenof mud 0!..108

and snow or such otherconditions as are encountered by linemen in their work.

The invention consists essentially of a puller having ascrewrack'to the: end of which a rope is adapted to be'attached and which-is rotated in opposite directions byaratchet lever having a lever; capable ofreversing the direction-of driveimparted bythe ratchet lev'cr and a split nut engaging the. screw,

1 which nut is provided with a parallel movement and is actuatedby :a turn button to .re-

lease it from or reinstate engagement with the screw 'as will be: more fullyshownin. the accompanying drawings and described in the following specification, in which 1-- Fig. 1 is a general viewof the invention.

Fig. 2 is an enlarged view of the ratchet mechanism with the cover plate broken away.

Fig. 3 is a plan view of the split nut mechanism.

- Fig. 4 is a front vie-w showing the nut open with the cover plate removed.

Fig. 5 is a front View showing the nut closed about the screw rack with the cover plate removed.

Fig. 6 is an end view of the split nut mechanism.

In the drawings like characters of reference indicate corresponding parts in each figure.

. The numeral 1 indicates generally a frame comprising a pair of parallel guides 2 which are connected together at their lower ends with a. transverse member 3 having a swivel mounted hook 4 andat the upper ends with a transverse member 5 which is centrally apertured as at 6 and is provided with a hexagonal recess 7, the purpose of which will herein- 7 after-appear. .Slidably movable through the aperturefi andthe recessTisa screw-rackz8 which is fitted at its upper end 'with-aswivel hook 9 and is journ'alled at its lower end inan' endwise movable crossheacl 1 0 which is slidable-upon the guides 42. Thcscrew rack is fitted adjacent the crosshead -10 with a bevelled 31Pl11l011 11 which isengaged by a bevelled-gear 12 keyedwtowashaft '13 suitably ournalled upona bracket -14.w.hich is formed integrally with the crossheadlO. Rotatably a ratchet-lever generally indicated by the nu meral 15 which is adapted to engagea ratchet wheel 16,see Figure 2, which is secured to the shaft 13; The ratchet: lever 15-termi'nates at its inner end in a jaw 17 having :front and rear plates 18'which areapertured. to. fit the shaft provided with a lever-.24 bywhich it is moved to engage either of the pawls 20. AC spring 25. is carriedwithi-n the jaw 17, the outer ends of which are-adapted? to exert an inward pressure upon each of the pawls .20, so that the pawl which isanot; held outwardly by the cam v22 may be free to engage the ratchet "wheel 16.

'Freely mounted upon the screw rack 8-is .a .collar .26 :having. opposing .hook members 27 which are adapted to embrace the guide rods 2. Pivotally mounted upon the face of the collar is a turnbutton 28 having a proj ecting lever 29 by which it is turned.

The numeral 30 indicates a nut divided along its longitudinal axis into halves 31 and 32, which halves are fitted with overhanging rack members respectively indicated by the numerals 33 and 34 and are each provided with a vertical slot 35 with which the ends.

of the turn button 28 mesh. The rack member 33 is provided with a horizontal slot 36, and the rack member 3 1 is provided with a corresponding tongue 37 both of which cooperate to provide a parallel'movement between the two as the lever 29 is turned to actuate the turnbutton 28, so that'the halves 31 and .32 of the nut 30 are moved in parallel relation to each other to, release, or mesh with the thread of the screw rack 8.,

-mou-nted upon the outer end. of the shaft 13 is The numeral 38 indicates a cover plate sethe rope to be pulled is attached to the hook 9. The lever 24 is set as required for adjusting the pawls to engage the ratchet wheel in the proper direction, when the operation of the ratchet lever 15 will impart rotation and endwise movement to the screwrack 8, thus exerting a pull on the rope (not shown). When it is desired to take a further pull upon the rope, it is secured by any suitable device and the puller disconnected therefrom, endwise movement isimparted to the screw rack 8 causing the half nuts 31 and 32 to be withdrawn fronithe socket 7. It then suflices to open the nut by moving the lever 29 and to slide the screw rack 8 outwards through the collar 26 and the upper transslides connected by transverse members, one 1 of said members having a recess, a screw rack adapted for attachment to the rope to be pulled and having endwise movement through said recess, a split nut engaging said screw rack and normally housed in saidrecess, said nut comprising a pairotha-lf portions slidably connected to a collar slidably movable along the screw rack, and means for imparting parallel movement to the half port-lOl'lS.

,2. In a rope puller comprising a pair of opposite parallel movement is imparted the half portions of the split nut.

3. In a rope puller comprising a pair of slides connected by transverse members, one of said members having a recess, a screw rack adapted for attachment to the rope ,to be pulled and having endwise movement .throughsa-id recess, a non-rotative collar having endwise movement u on thescrew rack, a' split nut consisting 0 two divided half portions, having rack members slidably connected together and to said collar, andmeans for imparting opening and closing movement to the half nut portions.

4. In arope puller comprising a pair of slides connected by transverse members, one of said members having a recempa screw rack adapted for attachment to the rope to be pulled andhaving endwise movement through said recess, a non-rotative collar having endwise movement upon the screw rack, a split nut consisting of two divided half portions having rack members one of which is provided with a horizontal parallel sided slot and the other having a tongue slidably movable therein,=means connecting the members to the collar, and means for imparting opening and closing movement to the 0 half nut portions. 1 7

' Dated at Vancouver, B. C. this 27th day of August, 1927;

JOSEPH osoAR GRENIER. 

